Sensor



FIG. 1 is a perspective view of my new sensor;

FIG. 2 is a plan view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a side view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a sensor, as shown. 